Method of Removing Sulfur Dioxide From A Flue Gas Stream
First Claim
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1. A method of removing SO2 from a flue gas stream comprising SO2, comprising:
- providing a source of trona;
injecting the trona into the flue gas stream, wherein the temperature of the flue gas is between about 600°
F. and about 900°
F.; and
maintaining the trona in contact with the flue gas for a time sufficient to react a portion of the trona with a portion of the SO2 to reduce the concentration of the SO2 in the flue gas stream.
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Abstract
A method of removing SOx from a flue gas stream including SOx includes providing a source of trona and injecting the trona as a dry sorbent into the flue gas stream. The temperature of the flue gas is at an elevated temperature greater than 400° F., preferably between about 600° F. and about 900° F. The trona is maintained in contact with the flue gas for a time sufficient to react a portion of the trona with a portion of the SOx to reduce the concentration of the SO2 and/or SO3 in the flue gas stream.
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Citations
27 Claims
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1. A method of removing SO2 from a flue gas stream comprising SO2, comprising:
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providing a source of trona; injecting the trona into the flue gas stream, wherein the temperature of the flue gas is between about 600°
F. and about 900°
F.; andmaintaining the trona in contact with the flue gas for a time sufficient to react a portion of the trona with a portion of the SO2 to reduce the concentration of the SO2 in the flue gas stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of removing SO3 from a flue gas stream comprising SO3, comprising:
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providing a source of trona; injecting the trona as a dry sorbent material into the flue gas stream, wherein the flue gas is at an elevated temperature greater than 400°
F.; andmaintaining the trona in contact with the flue gas for a time sufficient to react a portion of the trona with a portion of the SO3 to reduce the concentration of the SO3 in the flue gas stream. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification